American Mineralogist, 2000, V 85, N 7-8, July-August.

ARTICLES 


M.J. Holdaway 
Application of new experimental and garnet Margules data 
to the garnet-biotite geothermometer   
881 

Charles A. Geiger 
Volumes of mixing in aluminosilicate garnets: Solid solution
and strain behavior    
893 

Yuanming Pan and M.R. Stauffer 
Cerium anomaly and Th/U fractionation in the 1.85 Ga Flin Flon
Paleosol: Clues from REE- and U-rich accessory minerals and
implications for paleoatmospheric reconstruction    
898 

A. Borisov and R.J. Walker 
Os solubility in silicate melts: New efforts and results    
912 

Yi-Gang Zhang and John D.Frantz 
Enstatite-forsterite-water equilibria at elevated temperatures
and pressures
918 

Jean-Louis Robert, Giancarlo Della Ventura, Mark D. Welch,
and Frank C. Hawthorne 
The OH-F substitution in synthetic pargasite at 1.5 kbar, 850 °C
926 

Maciej Manecki, Patricia A.Maurice, and Samuel J. Traina 
Uptake of aqueous Pb by Cl-, F-, and OH- apatites: Mineralogic
evidence for nucleation mechanisms
932 

S.G. Eeckhout, E. De Grave, C.A.McCammon, and R. Vochten 
Temperature dependence of the hyperfine parameters of synthetic
P21/c Mg-Fe clinopyroxenes along the MgSiO3-FeSiO3 join
943

Daria Pasqual, Gianmario Molin, and Mario Tribaudino 
Single-crystal thermometric  calibration of Fe-Mg order-disorder
in pigeonites
953 

 Mario Tribaudino, Piera Benna, and Emiliano Bruno 
TEM observations on the P-1 - I-1 phase transition in 
feldspars along the join CaAl2Si2O8-SrAl 2Si2O8
963 

 Hongwu Xu, Peter J. Heaney, and George H. Beall 
Phase transitions induced by solid solution in stuffed 
derivatives of quartz: A powder synchrotron XRD study of the
LiAlSiO4-SiO2 join
971 

 Angelika H?lsmans, Martin Schm?cker, Werner Mader, and
 Hartmut Schneider 
The transformation of andalusite to mullite and silica: Part I.
Transformation mechanism in [001]A direction
980 

 Angelika H?lsmans, Martin Schm?cker, Werner Mader, and
Hartmut Schneider 
The transformation of andalusite to mullite and silica: Part II.
Transformation mechanisms in [100]A and [010]A directions 
987 

 Stefan Heinemann and Ronald Miletich 
Structure and twinning of tetragonal Ca3Mn2Ge3O12 garnet
993

N. Chinnery, A.R. Pawley, and S.M. Clark 
The equation of state of lawsonite to 7 GPa and 873 K, and 
calculation of its high pressure stability
1001 

Michael E. Fleet and Swaminathan Muthupari 
Boron K-edge XANES of borate and borosilicate minerals
1009 

David J. Sullivan, Jay S. Shore, and James A. Rice 
113Cd double-resonance NMR as a probe of clay mineral cation
exchange sites
1022 

Xing Cheng, Peidong Zhao, and Jonathan F. Stebbins 
Solid state NMR study of oxygen site exchange and Al-O-Al site
concentration in analcime
1030 

Claro I. Sainz-Diaz, Vicente Timon, Vicente Botella, and
Alfonso Hernandez-Laguna 
Isomorphous substitution effect on the vibration frequencies of
hydroxyl groups in molecular cluster models of the clay octahedral
sheet
1038 

Andrey G. Kalinichev, R. James Kirkpatrick, and Randall T.
Cygan 
Molecular modeling of the structure and dynamics of the interlayer
and surface species of mixed-metal layered hydroxides: Chloride and
water in hydrocalumite (Friedel's salt)
1046 

David L?vy and Jacques Barbier
VIII(Mg,Fe)0.85VI(Mg,Fe)4IV(Fe,Ge)3 O12: A new
tetragonal phase and its comparison with garnet
1053 

Volker Kahlenberg, Reinhard X. Fischer, and Cliff S.J. Shaw 
Rietveld analysis of dicalcium aluminate (Ca2Al2O5) A new high
pressure phase with the Brownmillerite-type structure
1061

Werner H. Paar, Ronald Miletich, Dan Topa, Alan J. Criddle,
Milka K. De Brodtkorb, Georg Amthauer, and Gerold Tippelt 
Suredaite, PbSnS3, a new mineral species from the Pirquitas Ag-Sn
deposit, NW-Argentina: Mineralogy and crystal structure 
1066 

Ritsuro Miyawaki, Satoshi Matsubara, Kazumi Yokoyama,
Koichi Takeuchi, Yasuko Terada, and Izumi Nakai 
Kozoite-(Nd), Nd(CO3)(OH), a new mineral in an alkali olivine
basalt from Hizen-cho, Saga Prefecture, Japan
1076 

Andrei V. Ivanov, Michael E. Zolensky, Akihiro Saito,
Kazumasa Ohsumi, S. Vincent Yang, Nataliya N. Kononkova,
and Takashi Mikouchi 
Florenskyite, FeTiP, a new phosphide from the Kaidun
meteorite
1082 

LETTERS 


John A. Purton, Jon D. Blundy, and Neil L. Allan 
Computer simulation ofhigh-temperature, forsterite-melt
partitioning 
1087 

Presentation of Awards for 1999 

Bjorn O. Mysen and Hatten S. Yoder, Jr. 
Presentation of the Roebling Medalof the Mineralogical Society of
America for 1999 to Ikuo Kushiro   
1092 

Ikuo Kushiro 
Acceptance of the Roebling Medal of the Mineralogical Society of
America for 1999   
1094 

Charles T. Prewitt 
Presentation of the Mineralogical Society of America Award for 
1999 to Yingwei Fei 
1097 

Yingwei Fei 
Acceptance of the Mineralogical Society of America Award for
1999 
1098 

Paul H. Ribbe 
Presentation of the Distinguished Public Service Award 
to Robert A. Howie 
1100 

R.A. Howie 
Acceptance of the Mineralogical Society of America Public 
Service Award of 1999 
1101 

BOOK REVIEWS   
1103